With Halloween fast approaching, the Chengdu Metro has stepped up to warn commuters that it will have absolutely no spooky hijinks on its trains.On Monday, a group of young people in Chengdu got all dressed up in their creepiest attire and boarded a Line 2 subway carriage with the goal of replicating the recent South Korean zombie apocalypse horror film “Train to Busan.”

Apparently, Chengdu Metro officials are not fans of the genre. To make their view known, they grabbed one of the pictures of the costumed riders and wrote “say no!” over it. Posting that image to their Weibo account along with a message:“This kind of behavior on the subway is against social morality. Not only can it shock passengers, it also harms the city’s culture. As far as such acts go, Chengdu Metro firmly says “NO!!!”

Surprisingly enough, many Weibo users seem to agree with the subway’s tentative ban on Halloween.“Normal cosplay i can accept, but for this kind of cosplay we need to consider how the elderly and children will react. In the end, the subway is a public good for all,” wrote one netizen.Personally, we think someone ought to TP the trains.Of course, the Chengdu Metro has always been a bit more strict than most, from installing hardcore metal detectors back in 2011 to not allowing a woman to take her duck on board in January — forcing her to slit its throat on the station floor.[Images via Weibo / Weibo]